South Korea uses 220 volts at 60 hertz, with outlets that normally have two round holes. Many modern phone and laptop chargers already support this voltage, but the plug shape and the device’s input rating must both be checked.
Quick answer
- If your charger says Input 100–240V, 50/60Hz, you usually need only a compatible plug adapter.
- If it is rated only for a lower voltage, a simple plug adapter does not make it safe; you may need an appropriate voltage converter or a different device.
- High-power heat appliances deserve special caution. A travel hair dryer or styling tool can fail or become dangerous if voltage and wattage are incompatible.
Adapter and converter are different
A plug adapter changes the physical shape so a plug fits the outlet. It does not change voltage. A voltage converter changes electrical voltage, but it must also be rated for the device’s power demand.
Never assume that a “universal adapter” converts voltage. Read the label on the device or power brick. If the rating is unclear, ask the manufacturer rather than testing it in the wall.
Which plugs are used?
Korean outlets have two round openings and are commonly compatible with round-pin Type C and Type F plugs. Outlet depth and grounding can vary, so a compact, securely fitting adapter is better than a loose stack of adapters.
How to read a charger label
- Find the line marked “Input.”
- Confirm the voltage range includes 220V.
- Confirm it supports 60Hz.
- Check the charger and cable are suitable for the device.
- Use a certified adapter with an appropriate power rating.
USB phone and laptop chargers commonly accept a wide voltage range, but the label on your exact charger is the deciding information.
Hair dryers, straighteners and other heat appliances
These devices use much more power than a phone charger. Even a converter advertised for travel may not support their wattage. The simplest solution is often to use an appliance supplied by the accommodation or buy a product designed for Korean voltage.
Where can you find an adapter in Korea?
VISITKOREA states that adapters can be borrowed or purchased through some hotel front desks and can be found at airports, retail stores, major duty-free shops and convenience stores. Availability is not guaranteed, particularly late at night, so bringing one is safer.
Safe charging checklist
- Do not use cracked adapters, loose plugs or damaged cables.
- Do not overload a small adapter with several high-power devices.
- Keep chargers away from water and soft bedding that traps heat.
- Unplug equipment that becomes unusually hot or smells damaged.
- Do not leave a large battery pack charging unattended for long periods.
Related guides
Before departure, review essential apps for traveling in Korea. If mobile service is not ready, compare Korea connectivity options.
Official source
VISITKOREA: Electricity & Communications
Reviewed on August 17, 2026. Always follow the rating printed on your device and charger; a plug adapter alone does not convert voltage.